Ambient Curing and Thermosetting of Polyurea and Polyurethane Castable Liner

Abstract For the last several decades, polyurethane/polyurea spray-applied elastomeric coatings have gained market acceptance as durable, and long lasting protective coatings. With the advances of the high-pressure impingement spray equipment technology during mid-to-late 1980’s, fast setting, two component polyurethane/polyurea coatings finally have a fighting chance in the protective coatings market. Polyurethane and polyurea coatings are well known for their high performance, corrosion resistance, chemical resistance, and high impact resistance in a various ambient temperature. However when it comes to abrasion and tear resistance, they exhibit moderate to medium results. Ambient curing and thermosetting polyurea and polyurethane castable liners can offer many of the features and benefits common with sprayed-on elastomeric coatings, while at the same time improving on the abrasion and tear resistances category. In this paper, we are going to present the chemistry of typical castable polyurethanes and polyureas, as well as competitive advantages, physical data, equipment requirement, application processes and market channels.